Printing head module

Abstract

A printing head module includes a bracket, a locking mechanism disposed on the bracket and a printing head. The bracket includes a containing cavity and a supporter. The locking mechanism includes a pressing component fixed to the supporter, a locking component and an elastic component. The locking component pivoted to the pressing component such that the elastic component leans therebetween. The locking component has a first positioning portion. The printing head detachably disposed in the containing cavity includes a second positioning component. The first positioning portion is engaged with the second positioning component, so the elastic component is pressed to provide the locking component a restoring force away from the pressing component to confine the printing head between the locking component and the bracket.

What is claimed is:  
     
       1. A printing head module, configured to Rum a three-dimensional object layer by layer with a modeling material on a carrying surface of a base, the printing head module comprising:
 a bracket including a containing cavity and a supporter; 
 a locking mechanism disposed on the bracket, wherein the locking mechanism comprises a pressing component, a locking component and an elastic component, the pressing component is fixed to the supporter, the locking component is pivotally connected to the pressing component, such that the elastic component leans between the pressing component and the locking component, the locking component has at least one first positioning portion and a first material inlet, and the pressing component has a second material inlet corresponding to the first material inlet for feeding the modeling material; and 
 a printing head detachably disposed in the containing cavity, wherein the printing head comprises at least a second positioning portion, configured to be engaged with the first positioning portion, such that the elastic component is pressed to provide the locking component with a restoring force away from the pressing component to confine the printing head between the locking component and the bracket. 
 
     
     
       2. The printing head module as claimed in  claim 1 , wherein the first positioning portion comprises a protrusion facing the containing cavity, and the second positioning portion comprises a concave correspondingly disposed on a top surface of the printing head. 
     
     
       3. The printing head module as claimed in  claim 1 , wherein the pressing component further comprises at least an opening, the locking component further comprises at least a hook, the hook passes through and is engaged with the opening, such that the pressing component and the locking component are connected to each other. 
     
     
       4. The printing head module as claimed in  claim 1 , wherein the printing head further comprises a nozzle, and the bracket further comprises a material feed pipe corresponding to the nozzle, so as to transmit the modeling material to the nozzle through the material feed pipe. 
     
     
       5. The printing head module as claimed in  claim 4 , wherein the modeling material is a hot melt material, and the printing head module further comprises:
 a heating unit coupled to the printing head and configured to heat the modeling material in the nozzle, so as to melt the modeling material to a molten material, and the molten modeling material is extruded from the nozzle. 
 
     
     
       6. The printing head module as claimed in  claim 5 , further comprising a fan disposed on the printing head, wherein an air-outlet surface of the fan faces the material feed pipe. 
     
     
       7. The printing head module as claimed in  claim 6 , further comprising a leaning component disposed between the fan and the printing head, such that an acute angle is included between the air-outlet surface and a longitudinal direction of the material feed pipe. 
     
     
       8. The printing head module as claimed in  claim 6 , further comprising a heat dissipation block connected to the fan. 
     
     
       9. The printing head module as claimed in  claim 1 , wherein the bracket further comprises a plurality of through holes, and a sliding rail passes through the through holes, such that the bracket is capable of sliding along the sliding rail. 
     
     
       10. The printing head module as claimed in  claim 9 , further comprising a motor coupled to the bracket, so as to drive the bracket to slide along the sliding rail. 
     
     
       11. The printing head module as claimed in  claim 1 , wherein the printing head further comprises a third material inlet located on a top surface of the printing head, and the third material inlet corresponds to the first material inlet and the second material inlet.